Add Unicode support for process spawning on Windows#14075
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Nice work, this looks great! |
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Updated. |
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Looks great, thanks! Could you squash the last two commits up into the first ones? It also looks like this needs a rebase. |
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Thanks :) Done and ran the tests. |
Changed libnative to use CreateProcessW instead of CreateProcessA. In addition, the lpEnvironment parameter now uses Unicode. Added a helper function os::win32::as_mut_utf16_p, which does basically the same thing as os::win32::as_utf16_p except the pointer is mutable.
Previously, make_command_line iterates over each u8 in the string and then appends them as chars, so any non-ASCII string will get horribly mangled by this function. This fix should allow Unicode arguments to work correctly in native::io::process::spawn.
Changed libstd to use Get/FreeEnvironmentStringsW instead of Get/FreeEnvironmentStringsA to support Unicode environment variables.
Added a run-pass test to ensure that processes can be correctly spawned using non-ASCII arguments, working directory, and environment variables. It also tests Unicode support of os::env_as_bytes. An additional assertion was added to the test for make_command_line to verify it handles Unicode correctly.
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Fixed the merge conflict. |
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Ooh, happy to see this landing! Thanks for the heads-up. |
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May 13, 2014
- Use Unicode-aware versions of `CreateProcess` (Fixes #13815) and `Get/FreeEnvironmentStrings`. - Includes a helper function `os::win32::as_mut_utf16_p`, which does the same thing as `os::win32::as_utf16_p` except the pointer is mutable. - Fixed `make_command_line` to handle Unicode correctly. - Tests for the above.
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This silently removes the working directory configuration if it's not in utf8 format (i.e., when dir.as_str() returns None). It should fail loudly, using expect.
Don't worry about changing this, though -- I'm currently rebasing another patch around this one, for dealing with non-unicode filesystems/arguments on other platforms, and I'll address the problem there.
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CreateProcess(Fixes libnative uses CreateProcessA on windows #13815) andGet/FreeEnvironmentStrings.os::win32::as_mut_utf16_p, which does the same thing asos::win32::as_utf16_pexcept the pointer is mutable.make_command_lineto handle Unicode correctly.